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兴运煤矿河流下厚煤层开采安全性分析和防控技术

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采矿与安全工程学报 2024年第2期41卷 305-314页

作者：郭文兵吴东涛杨伟强马志宝刘玄河南理工大学能源科学与工程学院河南焦作454000 煤炭安全生产与清洁高效利用省部共建协同创新中心河南焦作454000

为掌握厚煤层开采覆岩破坏及导水裂隙发育规律,综合运用理论分析、数值模拟、地表钻孔冲洗液漏失量现场观测和钻孔电视相结合的研究方法,对某矿工作面煤层上方覆岩破坏及导水裂隙发育规律进行了研究。提出了河流下厚煤层开采覆岩导水裂... 详细信息

为掌握厚煤层开采覆岩破坏及导水裂隙发育规律,综合运用理论分析、数值模拟、地表钻孔冲洗液漏失量现场观测和钻孔电视相结合的研究方法,对某矿工作面煤层上方覆岩破坏及导水裂隙发育规律进行了研究。提出了河流下厚煤层开采覆岩导水裂隙带发育高度计算方法,揭示了厚煤层开采覆岩破坏形态及裂隙发育过程,分析了河流下采煤安全性,开展了河流下煤层开采地表河流综合防治技术研究并进行了实施。结果表明:研究区河流下厚煤层开采的导水裂隙带高度为118.5 m,裂采比为21.5;理论分析和数值模拟得到的导水裂隙带发育高度与现场实测结果一致,导水裂隙带高度呈阶梯形上升,每个阶段均有突增点,基本顶周期性破断后,基本顶上覆岩层易发生整体断裂下沉,最终表现为阶段稳定及突增现象;导水裂隙带在埋深较浅处(如河床)将直接发育到地表,没有防水安全煤岩柱;针对河流下厚煤层开采安全问题,提出了河流下采煤的安全技术措施,包括地面河流水体处理、河底内封堵导水通道、井下防治水等,彻底解除了河流下采煤的安全隐患,实现了河流下厚煤层安全开采。

关键词：河流下采煤导水裂隙带漏失量钻孔电视水害防治

采空区不同岩性破碎岩石压实变形及声发射特征研究

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采矿与安全工程学报 2024年第2期41卷 384-394页

作者：温蓬郭文兵白二虎吴东涛王比比马志宝杨伟强河南理工大学能源科学与工程学院河南焦作454000 西南科技大学环境与资源学院四川绵阳621010 煤炭安全生产与清洁高效利用省部共建协同创新中心河南焦作454000

采空区不同岩性冒落破碎矸石的压实特性及承载力学性质对上覆岩层移动破坏有重要影响。采用侧限压缩试验与声发射测试试验方法,对相同级配的砂岩、砂质泥岩两种单一岩性及砂岩-砂质泥岩组合岩性破碎岩石在侧限压缩条件下的变形特征、破... 详细信息

采空区不同岩性冒落破碎矸石的压实特性及承载力学性质对上覆岩层移动破坏有重要影响。采用侧限压缩试验与声发射测试试验方法,对相同级配的砂岩、砂质泥岩两种单一岩性及砂岩-砂质泥岩组合岩性破碎岩石在侧限压缩条件下的变形特征、破碎特征及不同压缩阶段的声发射特征进行了研究。结果表明:在加载前期,破碎岩石的应变随时间的变化曲线存在直线上升段,随时间增加,呈现急剧上升后趋于平缓的特征;不同单一及组合岩性破碎岩石在侧限受压过程中应力与应变均呈非线性关系;根据破碎岩石的应力-应变特征将破碎岩石的压缩变形过程划分为快速压密阶段、缓慢压实阶段及稳定压固阶段。随着轴向压力逐渐增大,破碎岩样的大颗粒骨架破坏、中等颗粒移位滑动、小颗粒填充孔隙;不同岩性的应变与应力呈正相关关系,孔隙率与应力呈负相关关系,组合岩性岩样介于单一岩性岩样之间;不同单一、组合岩性比例与破碎岩样分形维数呈指数函数关系;基于压实变形声发射测试试验结果将破碎岩石压缩过程划分为滑移流动变形阶段、压裂变形填充阶段及压密弹性变形3个阶段;不同阶段破碎岩样的累计计数及累计能量曲线均表现出阶段性的变化特征,随着应力增加,前期声发射累计振铃计数及累计能量表现出先快速线性增加,后趋于平缓,再上升的趋势,后期增加速率逐渐减小,曲线逐渐趋于平缓;组合岩性岩样的声发射累计计数及能量均介于单一岩性岩样之间。研究结果为采空区上覆岩层及地表移动、采空区安全治理提供有力的理论指导。

关键词：采空区破碎岩石压实特性分形维数声发射监测

Clonal variation in growth,PSII photochemical activity and polar metabolites in Pinus elliottii×***

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Journal of Forestry Research 2022年第1期33卷 63-74页

作者： wenbing guo Fencheng Zhao Yang Liu Zhen Li Huishan Wu Yiliang Li Fangyan Liao Guangdong Provincial Key Laboratory of Silviculture Protection and UtilizationGuangdong Academy of Forestry.Address:No.233 Guangshan First RoadTianhe DistrictGuangzhou 510520People’s Republic of China

Pinus elliottii×*** is a widely planted commercial tree hybrid in South *** investigate the potential of physiological parameters for clonal selection,cuttings of three clones(EH3,EH4 and EH5)and a control were grown in phosphorus treated *** variations to phosphorous,photosystem II activity and polar metabolite abundance in needles were noted among *** EH5 was the most P-responsive and had maximum height *** highest maximum quantum yield of PSII in the dark(F_(v)/F_(m)),maximum quantum yield of PSII in the light(F_(v)'/F_(m)')and the actual PSII efficiency(Φ_(PSII))values were also found in EH5.A total of 64 polar metabolites were identified,21 were regulated by phosphorous,while 28 accumulated differentially among the three *** were few overlapping responsive metabolites to phosphorous *** EH5,the abundance of maltotriitol,neohesperidin and raffinose were highest,whereas galactinol and shikimic acid were lower compared with EH3 and *** results reveal that physiological traits were genetically controlled and might be useful for selecting clones with high phosphorous utilization efficiency.

关键词： Carbohydrates Chlorophyll fuorescence parameters Metabolic profiling Phosphorus fertilization Physiological traits

Mechanical properties and damage characteristics of solidified body-coal combination in continuous driving and gangue backfilling

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International Journal of Mining Science and Technology 2023年第10期33卷 1217-1228页

作者： Yi Tan Hao Cheng wenbing guo Erhu Bai Shaopu Zhang Yu Wang Zihao Li School of Energy Science and Engineering Henan Polytechnic UniversityJiaozuo 454000China State Collaborative Innovation Center of Coal Work Safety and Clean-Efficiency Utilization Henan Polytechnic UniversityJiaozuo 454000China

Recovery of the coal buried under buildings,railways and water bodies and the residual coal in irregularly arranged fully mechanized mining faces is a common engineering problem facing underground coal *** this study,a mining technology of continuous driving and gangue backfilling(CDGB)was *** technology,which can not only alleviate ground subsidence and gangue discharge,but also release the above-mentioned coals,contributes to green and efficient sustainable development of *** stability of the system of the solidified body-reserved coal pillar combination(S-C combination)is crucial to the CDGB ***,it is of great significance to explore the mechanical and damage characteristics of S-C combination in the synergistic bearing ***,four sets of differentshaped S-C combination specimens were fabricated and a S-C combination bearing structure in CDGB was constructed to explore the differences in mechanical characteristics and damage modes of different-shaped S-C combination specimens during ***,their surface strain field evolutions and acoustic emission(AE)response characteristics in the load-bearing process were obtained with the aid of the digital image correlation technique and the AE signal monitoring ***,a damage evolution model based on AE parameters and mechanical parameters was established to clarify the damage evolution *** following results were obtained:(1)The free area of S-C combination can serve as a quantitative index to evaluate the stability of the overburden control system;(2)The concept of critical value k of the free area was first *** the free area exceeds the critical value k(free area ratio greater than 1.13),the deformation resistance and the free area changes becomes negatively correlated;(3)As the free area expands,the failure of the S-C combination specimen evolves from tensile failure to shear *** distribution characteristics of the axial strain f

关键词： Continuous driving and gangue backfilling Solidified body-coal combination Mechanical properties Damage characteristics Digital image correlation technology Acoustic emission

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航空计算技术工业软件云化研究

山西电子技术 2024年第1期 116-118,122页

作者：徐瑞杨永胡春馨郭文彬航空工业西安航空计算技术研究所陕西西安710065

CFD软件作为CAE工业软件中的一种,主要针对空气动力学进行仿真计算。传统的CFD软件部署在高性能计算环境,用计算数值求解流体力学问题。本文从传统的计算部署现状分析及瓶颈出发,基于云计算的基础架构虚拟化、集群技术、工业软件服务化... 详细信息

CFD软件作为CAE工业软件中的一种,主要针对空气动力学进行仿真计算。传统的CFD软件部署在高性能计算环境,用计算数值求解流体力学问题。本文从传统的计算部署现状分析及瓶颈出发,基于云计算的基础架构虚拟化、集群技术、工业软件服务化、容器部署应用、容器调度技术介绍,阐述了云计算对CFD工业软件计算技术效率提升和创新应用的支持。通过对工业软件基于云计算技术的云化研究探讨,对构建基于下一代云计算服务大平台的工业软件平台创新研发体系具有重要意义。

关键词： CFD 工业软件云计算微服务容器技术

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河流下多煤层开采安全性及保护技术

绿色矿山

绿色矿山 2024年第1期2卷 1-10页

作者：郭文兵王比比杨伟强胡超群河南理工大学能源科学与工程学院河南焦作454003 煤炭安全生产河南省协同创新中心河南焦作454003

我国新疆地区干旱缺水,艾维尔沟河作为新疆一条具有重要地理特征和环境影响的河流,其对于流经区域的经济、生态都具有重要意义,因此在艾维尔沟河下进行煤炭开采时,既要保证矿井安全也要保证河流的正常使用。采用理论分析、数值模拟等方... 详细信息

我国新疆地区干旱缺水,艾维尔沟河作为新疆一条具有重要地理特征和环境影响的河流,其对于流经区域的经济、生态都具有重要意义,因此在艾维尔沟河下进行煤炭开采时,既要保证矿井安全也要保证河流的正常使用。采用理论分析、数值模拟等方法对河流下多煤层开采安全性及河流保护技术进行研究,通过理论计算得到多煤层开采条件下,覆岩导水裂隙带发育高度(11401工作面为41.9 m、1502工作面为110 m、11401工作面为113.8 m)并绘制剖面示意图;同时,采用数值模拟方法对覆岩导水裂缝发育形态及高度进行确定,最终基于导水裂隙带高度(117.8 m)与最小煤层埋藏深度(191.5 m)的相互关系,确定河流下开采是安全的可行的。在保证河流下煤层安全开采的前提下,通过分析离层注浆原理,并结合采动影响特征参数及工程现场,提出了以离层注浆为主,河道防渗及优化开采设计为辅的多手段对采动影响范围内地表特定目标的精准保护技术。根据实际采矿地质条件,采用概率积分法计算试采工作面开采前后河道位置处地表移动变形,计算结果显示:采用离层注浆精准保护技术后,河道的最大水平变形值(2 mm/m)未超出允许坝体的极限变形值(2.5 mm/m),所以采用离层注浆精准保护技术可以实现,井下安全开采的同时,保证河道的正常使用。通过对河流下多煤层开采的安全性及保护技术的分析研究,为矿山绿色开采提供参考和借鉴。

关键词：绿色开采河流下采煤导水裂隙带高度离层注浆多煤层开采

Top coal caving mining technique in thick coal seam beneath the earth dam

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International Journal of Mining Science and Technology 2017年第1期27卷 165-170页

作者： guo wenbing Tan Yi Bai Erhu iaozuo 454000 China Synergism Innovative Center of Coal Safety Production in Henan Province Jiaozuo 454000China

It is important to study the mining technology under structures for raising the coal resources recovery ratio. Based on the geological and mining conditions, the top coal caving harmonic mining technique in thick coal seam beneath the earth dam was put forward and studied. The 5 factors such as the panel mining direction, panel size, panel location, panel mining sequence and panel advance velocity were taken into account in this technique. The dam movement and deformation were predicted after the thick coal seam mining and the effects of mining on the dam were studied. By setting up the surveying stations on the dam, the movement and deformation of the dam were observed during mining. By taking some protective measures on the dam, the top coal caving mining technique in thick coal seam beneath the earth dam was carried out successfully. The study demonstrates that harmonic mining in thick coal seam is feasible under the dam. The safety of the earth dam after mining was ensured and the coal resources recovery ratio was improved.

关键词： Earth dam Thick coal seam Top coal caving mining Harmonic mining Mining damages and protection

Dynamic Landscapes of tRNA Transcriptomes and Translatomes in Diverse Mouse Tissues

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Genomics, Proteomics & Bioinformatics 2023年第4期21卷 834-849页

作者： Peng Yu Siting Zhou Yan Gao Yu Liang wenbing guo Dan Ohtan Wang Shuaiwen Ding Shuibin Lin Jinkai Wang Yixian Cun Center for Translational Medicine Precision Medicine InstituteThe First Affiliated HospitalSun Yat-sen UniversityGuangzhou 510080China Department of Radiation Oncology Affiliated Cancer Hospital&Institute of Guangzhou Medical UniversityGuangzhou 510080China Department of Medical Informatics Zhongshan School of MedicineSun Yat-sen UniversityGuangzhou 510080China Center for Stem Cell Biology and Tissue Engineering MOE Key Laboratory for Stem Cells and Tissue EngineeringSun Yat-sen UniversityGuangzhou 510080China RIKEN Center for Biosystems Dynamics Research Kobe 650-0047Japan Graduate School of Biostudies Kyoto UniversityKyoto 606-8501Japan Wuya College of Innovation Shenyang Pharmaceutical UniversityShenyang 110016China RNA Biomedical Institute Sun Yat-sen Memorial HospitalSun Yat-sen UniversityGuangzhou 510080China

Although the function of tRNAs in the translational process is well established,it remains controversial whether tRNA abundance is tightly associated with translational efficiency(TE)in ***,how critically the expression of tRNAs contributes to the establishment of tissue-specific proteomes in mammals has not been well ***,we measured both tRNA expression using demethylase-tRNA sequencing(DM-tRNA-seq)and TE of mRNAs using ribosome-tagging sequencing(RiboTag-seq)in the brain,heart,and testis of *** variation in the expression of tRNA isodecoders was observed among different *** the statistical effect of isodecoder-grouping on reducing variations is considered through permutating the anticodons,we observed an expected reduction in the variation of anticodon expression across all samples,an unexpected smaller variation of anticodon usage bias,and an unexpected larger variation of tRNA isotype expression at amino acid *** of whether or not they share the same anticodons,the isodecoders encoding the same amino acids are co-expressed across different *** on the expression of tRNAs and the TE of mRNAs,we find that the tRNA adaptation index(tAI)and TE are significantly correlated in the same tissues but not between tissues;and tRNA expression and the amino acid composition of translating peptides are positively correlated in the same tissues but not between *** therefore hypothesize that the tissue-specific expression of tRNAs might be due to post-transcriptional *** study provides a resource for tRNA and translation studies,as well as novel insights into the dynamics of tRNAs and their roles in translational regulation.

关键词： Translational efficiency Tissue-specific tRNA expression Codon usage bias Amino acid composition

Height of fractured zone inside overlying strata under high-intensity mining in China

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International Journal of Mining Science and Technology 2019年第1期29卷 45-49页

作者： wenbing guo Gaobo Zhao Gaozhong Lou Shuren Wang School of Energy Science and Engineering Henan Polytechnic University Coal Production Safety Collaborative Innovation Center in Henan Province Henan Polytechnic University International Joint Research Laboratory for Underground Space Development and Disaster Prevention of Henan Province Henan Polytechnic University

The height of fractured zone(HFZ) at the high-intensity longwall mining panel plays a vital role in the safety analysis of coal mining under bodies of water. This paper described definitions of the highintensity mining. The processes of overburden failure transfer(OFT) were analyzed, which were divided into the development stage and the termination stage. Through theoretical analysis, the limited suspension-distance and the limited overhanging distance were proposed to judge the damage of each stratum. Mechanical models of strata suspended integrity and overhanging stability were established.A theoretical method to predict the HFZ at the high-intensity longwall mining panel was put forward based on the processes of OFT. Taking a high-intensity longwall mining panel(No. 11915 panel) as an example, the theoretical method proposed, the engineering analogy and the empirical formulas in the Regulation were used to predict the HFZ. The results show that the theoretical result is consistent with the engineering analogies' result and empirical formulas' result. The rationality and reliability of the theoretical method proposed is verified.

关键词： High-intensity mining Overburden failure Height of fractured zone Overlying strata movement